[dpdk-dev] [PATCH v3] net/i40e: add Tx preparation for simple Tx data path
Ananyev, Konstantin
konstantin.ananyev at intel.com
Tue Apr 20 10:03:29 CEST 2021
> Introduce i40e_simple_prep_pkts() as the preparation function for
> simple Tx data path, as it's for sanity check for simple Tx.
>
> Suggested-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
> Signed-off-by: Leyi Rong <leyi.rong at intel.com>
> ---
> drivers/net/i40e/i40e_rxtx.c | 39 +++++++++++++++++++++++++++++++++++-
> drivers/net/i40e/i40e_rxtx.h | 2 ++
> 2 files changed, 40 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c
> index 3c7686c3f4..86a9eae370 100644
> --- a/drivers/net/i40e/i40e_rxtx.c
> +++ b/drivers/net/i40e/i40e_rxtx.c
> @@ -1479,6 +1479,43 @@ i40e_xmit_pkts_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
> return nb_tx;
> }
>
> +/*********************************************************************
> + *
> + * TX simple prep functions
> + *
> + **********************************************************************/
> +uint16_t
> +i40e_simple_prep_pkts(__rte_unused void *tx_queue, struct rte_mbuf **tx_pkts,
> + uint16_t nb_pkts)
> +{
> + int i;
> + uint64_t ol_flags;
> + struct rte_mbuf *m;
> +
> + for (i = 0; i < nb_pkts; i++) {
> + m = tx_pkts[i];
> + ol_flags = m->ol_flags;
> +
> + if (m->nb_segs != 1) {
> + rte_errno = EINVAL;
> + return i;
> + }
> +
> + if (ol_flags & PKT_TX_OFFLOAD_MASK) {
> + rte_errno = ENOTSUP;
> + return i;
> + }
> +
> + /* check the size of packet */
> + if (m->pkt_len < I40E_TX_MIN_PKT_LEN ||
> + m->pkt_len > I40E_FRAME_SIZE_MAX) {
> + rte_errno = EINVAL;
> + return i;
> + }
> + }
> + return i;
> +}
> +
> /*********************************************************************
> *
> * TX prep functions
> @@ -3412,7 +3449,7 @@ i40e_set_tx_function(struct rte_eth_dev *dev)
> PMD_INIT_LOG(DEBUG, "Simple tx finally be used.");
> dev->tx_pkt_burst = i40e_xmit_pkts_simple;
> }
> - dev->tx_pkt_prepare = NULL;
> + dev->tx_pkt_prepare = i40e_simple_prep_pkts;
> } else {
> PMD_INIT_LOG(DEBUG, "Xmit tx finally be used.");
> dev->tx_pkt_burst = i40e_xmit_pkts;
> diff --git a/drivers/net/i40e/i40e_rxtx.h b/drivers/net/i40e/i40e_rxtx.h
> index 3447a58c82..5ccf5773e8 100644
> --- a/drivers/net/i40e/i40e_rxtx.h
> +++ b/drivers/net/i40e/i40e_rxtx.h
> @@ -208,6 +208,8 @@ uint16_t i40e_recv_scattered_pkts(void *rx_queue,
> uint16_t i40e_xmit_pkts(void *tx_queue,
> struct rte_mbuf **tx_pkts,
> uint16_t nb_pkts);
> +uint16_t i40e_simple_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
> + uint16_t nb_pkts);
> uint16_t i40e_prep_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
> uint16_t nb_pkts);
> int i40e_tx_queue_init(struct i40e_tx_queue *txq);
> --
Acked-by: Konstantin Ananyev <konstantin.ananyev at intel.com>
> 2.17.1
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